Method and apparatus for atomic file look-up

Details Method and apparatus for atomic file look-up Method and apparatus for atomic file look-up

2006-07-25

2006-07-25

Ali, Mohammad (Department: 2166)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

07082424

ABSTRACT:
Method and apparatus for atomic file look-up. An atomic look-up operation allows an application to find out whether a file is opened atomically based on whether or not the file path is present in a file system namespace cache. If not, the file open request can be redirected, avoiding or minimizing impacts to the scheduling of various operations involved in executing an application. The request can be redirected by the application to a process that includes blocking point handling. An operating system according to the present invention includes a file system including a file system namespace, and an operating system kernel is operatively connected to the file system. The operating system kernel includes the file system namespace cache and the atomic look-up operation.

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Preslan K. W. et al., “A 64-bit, shared disk file system for Linux”, Mass Storage Systems, 1999 pp. 22-41.
Moon D. A., “Genera retrospective”, Objective Orientation in Operating Systems, 1991 IEEE Comput. Soc., US (Oct. 17, 1991) pp. 2-8.

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